In this case we need to check three option onlystandard boot priority order in the server BIOScontroller boot order if server is configured with multiple controller cardlogical drive boot order if server is configured with multiple logical drivesboth option need to be check in the SSA select right option accordingly

if issue persist then, i would request you to log support case with hpe technical support team, because log analysis are required to process further with troubleshooting in this case.